The car goes from 180 to 200 degrees. This has always been the case since I finished the car. I have a 70 Barracuda that has AC, Auto Trans. 360 Engine. The car originally had a 22" radiator (slant six). I installed a 26" radiator, a thermal clutch, and factory style shroud, and a repop 6 blade fan. The timing is set at 5 BTDC. I can drive the car for about 20 min (combo freeway/street) in 75 degree weather, without the AC on. The temp gauge (autometer) starts at 180 and goes up to 200. I checked the engine temp with an infrared laser thermometer. The lower radiator hose reads 180, the top hose 200. The thermostat housing is 200 and the area near the temp sensor is 200. I didn't open up the opening to the radiator support when I installed the larger radiator. Does a 7 blade fan really move more air? The radiator is fairly new and has always had antifreeze mix in it. Any recommendations?